| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-전기화학 |
| 제목 |
Facile synthesis of Calcium and Cobalt co-doped ZnO Nanocapsules for High Performance Energy Storage Supercapacitor Applications |
| 초록 |
In this, calcium (Ca) and Cobalt (Co) co-doped ZnO capsules (Ca-Co@ZnO) was fabricated by facile and single step hydrothermal process. The Ca-Co@ZnO catalyst physical, chemical and morphological properties were analyzed by using characterization techniques. The Ca-Co@ZnO showed a remarkable supercapacitor performance with 3M KOH aqueous electrolyte, which showed a 632 F g-1 specific capacitance at 0.5 A g-1 current density. However, it was more than 2.5 times higher than the pristine ZnO capsule, 1.5 and 1 times higher than the Ca@ZnO and Co@ZnO, respectively. The Ca-Co@ZnO showed more than 50% of capacity retention at higher current density and also showed the strong cyclic stability up to 5000 cycles with only 8% of capacity loss. The Ca-Co@ZnO//Ca-Co@ZnO symmetric device showed a 120 F g-1 specific capacitance at 0.5 A g-1 current density and 25.9 Wh Kg-1 energy density at 556.6 W kg-1 power density. |
| 저자 |
N. Ramesh Reddy, P. Mohan Reddy, G. Rajasekhara Reddy, Sang Woo Joo
|
| 소속 |
Yeungnam Univ. |
| 키워드 |
Co-doping; Energy storage; Capsule structure
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| E-Mail |
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